Extensible paint roller core



Feb. 7, 1961 F. GILL EXTENSIBLE PAINT ROLLER CORE Filed March 18, 1958 United States Pate 2,970,366 EXTENSIBLE PAINT ROLLER coma Frank w. Gill, 941 Baker St.,'Wisconsin Ra ids, Wis. Filed Mar. is, 1958, Ser. No. 722,291

9 Claims. or. 2 9-110 This invention relates to an extensible paint roller core.

Paint rollers comprise a spindle provided with a handle and upon which a core is rotatably mounted for the support of an applicator sleeve frequently made of lambswool or of synthetic wool. 1

Paint rollers of ditferent lengths are used in different situations.

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7 steel straps 16, 17 constitute the ends of a band which The present invention makes it possible to adjust the core to receive a standard sleeve of'either is folded upon itself at 19 and 20 to form ,a transverse portion 21 constituting a bearing part apertured at 22 for sliding engagement with the spindle 5. Like the straps 12, the portions 23, 24 of straps'16, 17 are slightly bowed outwardly. They both havereverse bends at 25, 26, forming intervening radial portions 27 which, in the extended position .of collar 18, are 'seatedwithin collar 10. I 1 j I The collars j8;and '10 v and straps l2- constitute-first core means. ,Collar 18 and straps. 16-and 17 constitute an extension core means movable between-the retracted dotted line position of Fig. 1 andthe extended position of Fig. 2.

Opposite margins of the relatively straight terminal portions of the straps 16 and 17 are notched at 28, 29 respectively for interlocking engagement with the radial wall portion 15 of collar 10 adjacent theslots 3, 4, as clearly appears in Figs. 2, 3 and 4. The dimensions of the slots are such that the springstraps .16, 17: are readily disengaged from such interlocking engagement with wall 15 by relative rotationof'thestraps and their connecting strap 21 about the axis of the spindle 5.

' Upon-such disengagement, the strap. portions 16,- 17 are movable through the slots 3 and'4 to the nested or retracted positions of the parts shown in dotted linesin In this retracted position of the extensible portions 7 of the apparatus, the shorter of two conventional appliextension is advanced from such housed position, it

cooperates with the original core to support the longer applicator sleeve. These results are achieved by constructing the basic core of a pair of collars individually journaled upon the spindle and connected by diametrically opposite spring ribbons. The collar at-the outer end of the spindle has slots angularly offset from the ribbons of the basic core to receive spring ribbons which carry a collar constituting the end of the extensible core. These ribbons reciprocate through the slots and are formed for rotative interlocking engagement with the slotted collar to retain the extensible core in its operative use.

In the drawings:

Fig. 1 is a view partially in side elevation and partially in axial section showing a device embodying the invention, the basic core and extension core being shown in section, and the latter being illustrated in its extended position of use in full lines, and being shown in dotted lines in its retracted position.

Fig. 2 is a view in. perspective on an enlarged scale showing the device illustrated in Fig. 1.

Fig. 3 is a view taken in section on the line 33 of Fig. 1, the parts being shown on an enlarged scale.

Fig. 4 is a view on the line 44 of Fig. 3.

The spindle 5 comprises a piece of heavy wire hav ing an integral handle 6 provided with a grip 7 in accordance with conventional practice. The basic core rotatable on the spindle comprises a cup-shaped collar 8 havinghub portion 9 and a like collar 10 having a hub portion 11. The collars 8 and 10 are inter-connected by outwardly bowed straps or ribbons of spring steel as indicated at 12, these desirably being riveted to the respective collars. The collars are confined against axial displacement on the spindle by any desired means, as by the slight deformations of the spindle at 13 and '14.

For the purposes of the present invention, the gen erally radial sheet metal wall 15 of the collar 10 which is outermost on the spindle is provided with slots at 3 and 4 through which slidably project the straps 16, 17

cator sleeves (not shown) willjust cover all three of collars 8, 10 and 18. For example, a conventional sleeve of seven inches in length might be assumed to be the 4 sleeve under consideration.

and will have intermediate support from the several flexible ribbons and the intermediate collar 10.

Throughout most or the length of the longer sleeve, it

will be supported on four ribbons, but adjacent the collar 8 and adjacent the collar 18 it will be supported by two ribbons only. Nevertheless, the support is entirely adequate to enable the applicator sleeve to perform its intended function.

I claim:

1. In a device of the character described for supporting paint roller applicator sleeves of differing lengths, the combination with a spindle, of a first sleeve supporting core means rotatably mounted on the spindle and an extension sleeve supporting core means having means supporting it on the spindle and on the first core means for sliding axially of the spindle between a sleeve supporting etracted position on the'spindle respecting the first core means and a sleeve supporting extended position on the spindle with respect thereto.

. 2. The device of claim 1 in which the extension core 2 means has a spindle bearing part through which the spindle extends, and which' is axially adjustable along the spindle in the movement of the extension core means be tween its retracted and extended positions.

3. The device of claim 2 in which the first core means comprises a. skeletonized structure having collars spaced axially of. the spindle. and meansextending between said.

collars for the support of an applicator sleeve.

4. The device of claim 3 in which said extension core means comprisesfa third collar free of direot-contact wi-th the spindle and a pair of diametrically. opposite, bands for which a collar of the first core meanslprovides. guide openings, said bearing means-connecting saidbandsand being apertured to receive a: portion ofi the 'spindleintermediate the ends of the first core means;

- 5. The device-of'claim-4 in which s'aidibandsand the apertured collar are respectively formedfor-inter-locking engagement upon relative rotationin the extended position of the extension core means.

6. Inadeviceof the charactendeseribed for-supporting various paint roller applicator sleeves of dilfering lengths, the combination with a spindle, of a first core means rotatablymountedthereon andcomprisingaxially spaced collars and outwardly bowed bands having-their-ends re spectivelyconnected-withsaid-:collars and=disposed at dif ferent sides of the spindle, the collar nearest the end of the spindle being provided with a generally radial wall having slots angularly offset from said bands, and an length between the. .colla r s of the first core, portions of the extension core means comprising a-band havingacentral portion providedwith an aperture reciprocable upon the spindle between the collarsofthe-first core means, and leg portions extending from said central portion ingeneral parallelism with the spindle and projecting through said slots beyond the end of the spindle, and a third collar connecting the projecting ends of said leg portions, and movable therewith between'a retracted position ofproximity to the slotted collar and an advanced'position remote therefrom.

7. The device of claim 6 in which said legs have s amens 4 through whichthey extendpwhen rotated, respecting. said wall in the extended position of said third collar.

8. In a paint roller core for supporting applicator sleeves of different lengths, a spindle having a handle and a free end, a first core including a pair of collars individually journalled on the spindle and outwardly bowed spring bands extending between-the collars on opposite sides of the spindle, and a second and extensible core including a third-collar-free from direct contact with the spindle andaband fpldedonjtself and providingabearing through which the spindle extends and providing outwardly bowediportionsle'xtending for atiportion of the second core band and the collar thereof projecting beyond the first core collar adjacent the end of the spindle when the second core is extended, the bowed portions of the second core band extending along opposite sidm of thespindle at:substantially,90? fromthe first core bands.

9. The device of claim 8 in which the first core collar adjacent the end ofthe spindle has ,slotsand the band of the second core moves .throughthe slots and is supported therein upon extension of the second. core, the second core band having notches severally. engageable-withsaid first core collar for'interlocking the cores against undesired axial movement;

References Cited injthe fileof thispatent UNITED STATES PATENTS 2,680,873 Ernst j June-15, 1954 1735;128' Adams Feb. 21', 1956 2,758,364 McMillan Aug. 1'4, 1956 FO EIGN ATENTS. France"&-'-;-a-a----J--aa NOV; 

